Valve.



w. J. HICKEY VALVE.

APPLICATION FILED JULY 1,1915- 1,?269,Q8, Paten't d une 11, 1918.

alga!!! INVENTOW WWW LWM BY fi WNW ATTORNEY UNITED @TATB% nit.

WALT R J. HICKEY, or OIL crrY, LOUISIANA.

VAL E.

Specification of Letters Patent. 1 Patented June fl, 1918.

Application filed July 1. 1916. Serial No. 107,057.

particularly to globe check valves provided with means for limiting the movement of the valve proper.

One of the main objects of the invention is to provide a valve of the character stated of simple construction and operation. A further object is to provide a freely movable check valve and means for positively limiting the movement of the same in one direction or for securing the valve against movement, optionally.

In the drawings Figure 1 is a vertical sectional view through the invention, and

Fig. 2 is a section on line 22 of Fig. 1.

The valve casing 1 is of usual construction having a threaded inlet 2 and outlet 3. This casing is formed with an integral Z-shaped web 4 dividing the casing into the inlet chamber 5 and outlet chamber 6. The horizontal wall of web 4 is provided with a cir cular opening 7, the periphery of which is beveled inward and downward to form a seat for the valve 8.

Valve 8 is provided with an upwardly extending stem 9 formed with a series of radially projecting ribs 10. The ribs 10 fit loosely into guideways 11 formed in the inner surface of a cylindrical chamber 12 formed in the cap plug 13 which is threaded into the top of valve casing 1. The ribs 10 of the valve stem are considerably smaller than the grooves 11 in cross section so as to permit limited rotary movement of the valve in either direction thus insuring proper seating of the valve. The cap plug 18 is provided with a threaded bore communicating with chamber 12 into which is threaded a valve rod 14 provided at its upper end with a hand wheel 15. A head 16 is secured on the lower end of valve rod 14 in the chamber 12, and is adapted to engage the upper end of valve stem 9 for the purpose to be disclosed. The usual packing nut 17 is threaded on the upper end of the neck 13 of the cap plug 13.

In using my valve, the water, or other fluid, will enter the inlet chamber 5 through the inlet 2 and will exert pressure upon the under facejof valve 8 so as to raise the same,

flowing through the, opening 7 of the web ,4 .into .the outlet. chamber 6 and thence through the outlet 3. It will be evident that the quantity of fluid which can flow from the inlet chamber to the outlet chamber in given period of time will depend directly onthe distance which valve 8 is raised from its seat. By limiting this distance, the flow of fluid may be varied as desired. With the parts in the position shown in Fig. 1, the valve 8 is free to open to its maximum extent under the pressure of the fluid flowing into chamber 5. By turning the valve rod 14 so as to bring the head 16 into a lowered position, the upward movement of the valve will be positively limited by the head so that the quantity of fluid through the valve casing will be reduced. By turning the valve rod still further so as to bring the head 16 into its lowermost position, the valve will be pressed firmly on its seat and all communication between the chambers 5 and 6 cut 011', thus entirely preventing the flow of any fluid.

After the rod 14 has been lowered sufficiently to press the valve 8 against the seat 7, a slight retraction of the rod 14 will allow the fluid pressure exerted on the lower side of the valve 8 to raise the valve slightly so that the valve face will press only lightly on the valve seat. If in this position, the valve rod 14 be rotated slightly in contact with the stem 9 friction between the head 16 and the stem 9, together with the rotary play allowed the valve stem, will cause a slight grinding movement between the valve face and the seat, thus cleaning the face and seat.

By this construction, the valve is enabled to rise and fall according to the flow pressure of the fluid while its upward movement may be positivley limited so as to control the maximum amount of fluid which flows through the valve at a given pressure. This renders it possible to regulate or adjust the valve without interfering with its operation as a check valve.

There may be slight variations made in the construction and arrangement of the diflerent parts of my valve without departing from the field and scope of the invention, and I intend to include all such variations as fall within the appended elaim,in this application, in which a preferred form only of my invention is disclosed.

What I claim is In a valve, a casing having an integral web dividing the casing into an inlet chamber and an outlet chamber, said web having an opening provided with a peripheral valve seat, a valve adapted to be seated in said opening and having a stem provided with radial guide ribs, a eap plug secured in said casing and having a cylindrical chamber provided with radial grooves loosely receiving the said ribs of the valve stem so as to permit 'free verticalmovement ofthe valve, the said ribs being of smaller cross section than the grooves so as to permit limited rotary movement of the valve in either direction, and a valve rod threaded into the cap plug and provided with a valve stem engaging head on its inner end for positively limiting the upward movement of the valve and for frictionally engaging the upper end of the valve stem so as to cause partial rotation thereof when the said rod is in engagement with the valve stem so as to seat the valve.

In testimony whereof I ailix my signature in presence oftwo witnesses.

WALTER J. HICKEY.

Witnesses:

=W. M. 'STnrHnNsoN, L. F. CARTER.

Copiesof thispatent may be obtained for five cents each, by addressing the Commissioner ofiatents,

' Washington, D13. 

